rails/strong_parameters — pull request #106 by fabiokr (2013-02-21 13:44:19+00:00)
Title: Rack::Test::UploadedFile is a permitted scalar

Fixes #105

According to [this](https://github.com/rails/rails/blob/master/actionpack/lib/action_controller/test_case.rb#L490), Rack::Test::UploadedFile is an acceptable type, so strong_parameters should allow it.